package com.personal.website.lottery.web.mail;


import com.personal.website.lottery.util.PropertiesUtil;

import java.util.Date;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
 * 简单邮件（不带附件的邮件）发送器
 */
public class SimpleMailSender  {
    private Properties prop = new Properties();
    public static String APPLICATION_CONFIG_PATH = "application.properties";

    public SimpleMailSender(){
        this.prop = PropertiesUtil.getProperty(APPLICATION_CONFIG_PATH);
    }

    private MailSenderInfo genMailInfo(String toAddress, String subject, String content) {
        MailSenderInfo mailInfo = new MailSenderInfo();
        mailInfo.setMailServerHost(prop.getProperty("mail.serverHost"));
        mailInfo.setMailServerPort(prop.getProperty("mail.serverPort"));
        mailInfo.setValidate(Boolean.parseBoolean(prop.getProperty("mail.validate")));
        mailInfo.setUserName(prop.getProperty("mail.address"));
        mailInfo.setPassword(prop.getProperty("mail.password"));//您的邮箱密码
        mailInfo.setFromAddress(prop.getProperty("mail.address"));
        mailInfo.setToAddress(toAddress);
        mailInfo.setSubject(subject);
        mailInfo.setContent(content);
        return mailInfo;
    }

    public boolean sendTextMail(String toAddress, String subject, String content) {
        return sendTextMail(genMailInfo(toAddress, subject, content));
    }

    public boolean sendHtmlMail(String toAddress, String subject, String content) {
        return sendHtmlMail(genMailInfo(toAddress, subject, content));
    }

    /**
     * 以文本格式发送邮件
     * @param mailInfo 待发送的邮件的信息
     */
    private boolean sendTextMail(MailSenderInfo mailInfo) {
        // 判断是否需要身份认证
        MyAuthenticator authenticator = null;
        Properties pro = mailInfo.getProperties();
        if (mailInfo.isValidate()) {
            // 如果需要身份认证，则创建一个密码验证器
            authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
        }
        // 根据邮件会话属性和密码验证器构造一个发送邮件的session
        Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
        try {
            // 根据session创建一个邮件消息
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            // 设置邮件消息的发送者
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address to = new InternetAddress(mailInfo.getToAddress());
            mailMessage.setRecipient(Message.RecipientType.TO,to);
            // 设置邮件消息的主题
            mailMessage.setSubject(mailInfo.getSubject());
            // 设置邮件消息发送的时间
            mailMessage.setSentDate(new Date());
            // 设置邮件消息的主要内容
            String mailContent = mailInfo.getContent();
            mailMessage.setText(mailContent);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }

    /**
     * 以HTML格式发送邮件
     * @param mailInfo 待发送的邮件信息
     */
    private boolean sendHtmlMail(MailSenderInfo mailInfo){
        // 判断是否需要身份认证
        MyAuthenticator authenticator = null;
        Properties pro = mailInfo.getProperties();
        //如果需要身份认证，则创建一个密码验证器
        if (mailInfo.isValidate()) {
            authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
        }
        // 根据邮件会话属性和密码验证器构造一个发送邮件的session
        Session sendMailSession = Session.getDefaultInstance(pro,authenticator);
        try {
            // 根据session创建一个邮件消息
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            // 设置邮件消息的发送者
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address to = new InternetAddress(mailInfo.getToAddress());
            // Message.RecipientType.TO属性表示接收者的类型为TO
            mailMessage.setRecipient(Message.RecipientType.TO,to);
            // 设置邮件消息的主题
            mailMessage.setSubject(mailInfo.getSubject());
            // 设置邮件消息发送的时间
            mailMessage.setSentDate(new Date());
            // MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象
            Multipart mainPart = new MimeMultipart();
            // 创建一个包含HTML内容的MimeBodyPart
            BodyPart html = new MimeBodyPart();
            // 设置HTML内容
            html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");
            mainPart.addBodyPart(html);
            // 将MiniMultipart对象设置为邮件内容
            mailMessage.setContent(mainPart);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }
}